Current Build

Extension: regex

FHIR Infrastructure Work Group Maturity Level: 1InformativeUse Context: Any

URL for this extension:

http://hl7.org/fhir/StructureDefinition/regex

Status: draft. Extension maintained by: Health Level Seven International (FHIR Infrastructure)

A regular expression that defines the syntax for the data element to be considered valid.

Context of Use: Use on Element ID Questionnaire.item or Element ID ElementDefinition

Extension Content

Summary

NameFlagsCard.TypeDescription & Constraintsdoco
.. regex0..1stringURL = http://hl7.org/fhir/StructureDefinition/regex
regex: A regular expression that defines the syntax for the data element to be considered valid.


Use on Element ID Questionnaire.item or Element ID ElementDefinition

doco Documentation for this format

Full Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. extension0..1ExtensionURL = http://hl7.org/fhir/StructureDefinition/regex
regex: A regular expression that defines the syntax for the data element to be considered valid.


Use on Element ID Questionnaire.item or Element ID ElementDefinition
... extension 0..0
... url 1..1uri"http://hl7.org/fhir/StructureDefinition/regex"
... valueString 0..1stringValue of extension

doco Documentation for this format

XML Template

<!-- regex -->doco

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/regex" >
  <!-- from Element: extension -->
 <valueString value="[string]"/><!-- 0..1 Value of extension -->
</extension>

JSON Template

{ // regex
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open ]
    "url" : "http://hl7.org/fhir/StructureDefinition/regex", // R! 
    "valueString" : "<string>" //Value of extension
  }

Summary

NameFlagsCard.TypeDescription & Constraintsdoco
.. regex0..1stringURL = http://hl7.org/fhir/StructureDefinition/regex
regex: A regular expression that defines the syntax for the data element to be considered valid.


Use on Element ID Questionnaire.item or Element ID ElementDefinition

doco Documentation for this format

Full Structure

NameFlagsCard.TypeDescription & Constraintsdoco
.. extension0..1ExtensionURL = http://hl7.org/fhir/StructureDefinition/regex
regex: A regular expression that defines the syntax for the data element to be considered valid.


Use on Element ID Questionnaire.item or Element ID ElementDefinition
... extension 0..0
... url 1..1uri"http://hl7.org/fhir/StructureDefinition/regex"
... valueString 0..1stringValue of extension

doco Documentation for this format

XML Template

<!-- regex -->doco

<extension xmlns="http://hl7.org/fhir"
     url="http://hl7.org/fhir/StructureDefinition/regex" >
  <!-- from Element: extension -->
 <valueString value="[string]"/><!-- 0..1 Value of extension -->
</extension>

JSON Template

{ // regex
  // from Element: extension
    "extension" : [ //  sliced by value:url  in the specified order, Open ]
    "url" : "http://hl7.org/fhir/StructureDefinition/regex", // R! 
    "valueString" : "<string>" //Value of extension
  }

 

Constraints

  • ele-1: All FHIR elements must have a @value or children (xpath: @value|f:*|h:div)
  • ext-1: Must have either extensions or value[x], not both (xpath: exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')]))